minneapolis is at an 11-inch deficit. they'll get five to eight. then the cold blast of air comes in. in the teens by monday. starting the workweek this chicago in the teens. dallas could see flakes of snow as well. >> 14 in minneapolis. >>> we turn to a headline that caught our attention here. many americans driving new cars are now being watched by a device right in their own car. tracking the turns and the speed. and it is igniting a new debate tonight about who gets that information. here's abc's mark greenblatt now. >> reporter: you're probably used to hearing about black boxes helping solve airplane crashes. but lieutenant governor timothy murray found out the hard way they're in some cars t when he crashed this one, he said he had a seat belt on and claimed hewas the data recorder said he was driving unbelted and faster than 100 miles an hour. but there's a larger controversy >> there are important safety thhol' but there a who will access the information and how long will it be collected? >> reporter: the boxes tap into the electronics to t